v3.22.4
Pensions And Other Postretirement Benefits - Contributions and Plan Amendments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions to defined contribution plans $ 724 $ 606 $ 573
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Years of service 30 years    
Employer contributions $ 403 438 464
Pension Plan | Qualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Period of time for which there are no mandatory contributions for qualified plans 5 years    
Pension Plan | U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 71 67 68
Pension Plan | U.S. | Nonqualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in next fiscal year 60    
Pension Plan | U.S. | Qualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Mandatory contributions over the next five years 0    
Pension Plan | Non-U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 332 371 396
Estimated contributions in next fiscal year 600    
Pension Plan | Canada and United Kingdom      
Defined Benefit Plan Disclosure [Line Items]      
Mandatory contributions over the next five years 269    
Other Postretirement Benefits Plan      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 387 400  
Other Postretirement Benefits Plan | U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 335 $ 351 343
Pension Plan and Other Postretirement Benefits Plan | U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Remeasurement decrease due to mortality assumptions     $ 686